Here's another way to fill the transmission with the correct amount of lube.

I'm getting the RatCub ready for a test run whenever the weather and my mood match.

I didn't add the lube when I assembled the tranny, and I didn't want to use the level plug for obvious reasons. I don't have proper liquid measuing containers so I used a coffee can. By careful measurements and calculations I determined the 3 1/2 pints would require 3 9/16 deep in the 6" diameter can. By marking that measurement on a stick I could pour exactly that amount into the can. Wasn't that easy?

Volume measurements on a dipstick are also useful when painting as well. The stick can have a mark for the paint and another higher mark for paint + reducer. It's handier and maybe even more accurate than a scales.